The invention provides an intelligent monitoring system which comprises a monitoring device, a central monitoring system, a WiFi (wireless fidelity) device and an alarm device. The central monitoring system comprises a central processing unit, a memory and a wireless gateway, the memory and the wireless gateway are respectively connected with the central processing unit, the alarm device is connected with the central processing unit, the monitoring device comprises a wireless human body infrared monitor, the wireless human body infrared monitor comprises a microprocessor, a human body infrared monitoring device, a memory device and a wireless communication device, the human body infrared monitoring device, the memory device and the wireless communication device are respectively connected with the microprocessor, and data transmission is achieved between the microprocessor and the central processing unit by the wireless communication device. According to the intelligent monitoring system, people can comprehensively monitor family conditions through mobile phones or computers, potential safety hazards of families can be early discovered and treated and can early give an alarm, and deterioration is prevented.